Well the problem with that is, like me, i have zero interest in sara or the twins. So if the storyline for the twins and sara was fully comkpleted first, id have stopped playing the game after the first relationship point. Also works the other way round. If Mom, Carolines, Violets and Judys story were completed first, then id play them and stop playing the game after completing them.
I kinda get where you are coming from on that regard, id have preferred to see everything done for each relationship point for each character rather than prioritising certain "in demand" characters.
It's a mistake many Patreon developers make in an attempt to offer something (and encouragement) to those who pledge more money each month.
(I have said similar things to the below comments in the MoH thread)
Polls are nice but they do take the Developer out of their story to satisfy some track that they didn't already have planned. And the story is what keeps us interested and playing!
The polls should be used only for short side stories with the main focus of development being moving their main story narrative and characters forward.
In this game the Sisters and Twins won a few polls. In a game titled "MILF CITY" the majority of recent development has been directed at all the women who are NOT MILFS!
Now I get Brother Sister is a very popular incest topic and no one should complain when it is incorporated into am incest story...
But if your game is titled MILF CITY you had best be sure to at least provide one MILF of content in each release no matter what the poll numbers are!
Some Devs (and I'm not accusing this one to be clear) run Polls because they really have no story and no clear narrative they are working on. Big Brother was a prime example of this practice which took that game so far off the beaten track and caused the story to change so drastically from release to release that zero story is actually present in that game whatsoever. Just a bunch of scenes slapped together based on whatever the last poll said.
A Good developer will have the entire story mapped out before they even start. And if it is a good story it will balance the scenes the main characters get each month because those scenes are quests that tell part of the main story and will eventually lead to the scenes of the other main character's story.
i.e. having sex with a sister that the mother finds out about or catches you in and leads to advancing the mother's sexual story. (not in this game just an example!). Then the sister sex is part of the "MILF City" story as it is a leading factor in getting to the MILF.
Polls should be used to add some variety or spice outside of the main story but not be the major focus of that releases development.
I don't mind the Twins or the Sisters in this game but they don't in anyway seem attached to a central story of this game. The Twins served the quest to get rid of the Father but we have not gotten the main story payoff of that quest yet. And if the polling goes the wrong way the next few months we may never see that payoff for half a year.
So my feeling is run a poll to create a short side quest in that release but never let it stop you from moving the planned story forward with the main characters.
If not there will be so many characters to deal with that none of your users will ever be happy because their favorite character only gets a scene once every 6 months!